------------[ cut here ]------------ kernel BUG at net/netfilter/nf_conntrack_core.c:570! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12178 Comm: syz.6.1816 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline] RIP: 0010:__nf_conntrack_confirm+0x109d/0x10a0 net/netfilter/nf_conntrack_core.c:1207 Code: fc ff ff e8 f5 8a 69 f9 48 c7 c7 c0 03 64 8d 48 c7 c6 80 56 03 8b 48 8b 54 24 08 e8 2d 02 e9 fb e9 fa f1 ff ff e8 d3 8a 69 f9 <0f> 0b 90 55 41 57 41 56 41 55 41 54 53 48 89 fb 48 bd 00 00 00 00 RSP: 0018:ffffc9000344f420 EFLAGS: 00010287 RAX: ffffffff880e329d RBX: ffffe8ffffc24af8 RCX: 0000000000080000 RDX: ffffc9000eceb000 RSI: 00000000000008e6 RDI: 00000000000008e7 RBP: ffff888060033800 R08: 0000000000000004 R09: 0000000000000003 R10: fffff52000689e74 R11: 1ffff92000689e74 R12: 00000000000137e2 R13: 0000000000000000 R14: ffff888060033858 R15: 0000000000000000 FS: 00007f5f5795b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2f950f CR3: 000000005cf5b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: nf_conntrack_confirm include/net/netfilter/nf_conntrack_core.h:62 [inline] nf_confirm+0x381/0x4b0 net/netfilter/nf_conntrack_proto.c:154 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xb9/0x200 net/netfilter/core.c:584 nf_hook+0x1f2/0x350 include/linux/netfilter.h:257 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x1ea/0x2b0 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:452 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x11c3/0x1c00 net/ipv4/ip_output.c:532 __tcp_transmit_skb+0x1d2a/0x3410 net/ipv4/tcp_output.c:1404 tcp_fin+0x10c/0x4d0 net/ipv4/tcp_input.c:4468 tcp_data_queue+0x854/0x5f10 net/ipv4/tcp_input.c:5131 tcp_rcv_state_process+0x2af7/0x4150 net/ipv4/tcp_input.c:6715 tcp_v4_do_rcv+0x680/0x9b0 net/ipv4/tcp_ipv4.c:1753 sk_backlog_rcv include/net/sock.h:1061 [inline] __release_sock+0x1b9/0x420 net/core/sock.c:2727 release_sock+0x5b/0x1b0 net/core/sock.c:3268 mptcp_check_send_data_fin+0x158/0x280 net/mptcp/protocol.c:2720 inet_shutdown+0x260/0x370 net/ipv4/af_inet.c:909 __sys_shutdown_sock net/socket.c:2275 [inline] __sys_shutdown net/socket.c:2287 [inline] __do_sys_shutdown net/socket.c:2295 [inline] __se_sys_shutdown net/socket.c:2293 [inline] __x64_sys_shutdown+0x16d/0x1d0 net/socket.c:2293 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f5f59b14969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5f5795b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 00007f5f59d3c080 RCX: 00007f5f59b14969 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000006 RBP: 00007f5f59b96ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5f59d3c080 R15: 00007ffc96373438 Modules linked in: ---[ end trace 0f7b2cb886d0d49c ]--- RIP: 0010:nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline] RIP: 0010:__nf_conntrack_confirm+0x109d/0x10a0 net/netfilter/nf_conntrack_core.c:1207 Code: fc ff ff e8 f5 8a 69 f9 48 c7 c7 c0 03 64 8d 48 c7 c6 80 56 03 8b 48 8b 54 24 08 e8 2d 02 e9 fb e9 fa f1 ff ff e8 d3 8a 69 f9 <0f> 0b 90 55 41 57 41 56 41 55 41 54 53 48 89 fb 48 bd 00 00 00 00 RSP: 0018:ffffc9000344f420 EFLAGS: 00010287 RAX: ffffffff880e329d RBX: ffffe8ffffc24af8 RCX: 0000000000080000 RDX: ffffc9000eceb000 RSI: 00000000000008e6 RDI: 00000000000008e7 RBP: ffff888060033800 R08: 0000000000000004 R09: 0000000000000003 R10: fffff52000689e74 R11: 1ffff92000689e74 R12: 00000000000137e2 R13: 0000000000000000 R14: ffff888060033858 R15: 0000000000000000 FS: 00007f5f5795b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2f950f CR3: 000000005cf5b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400